<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>Bootstrap列嵌套</title>
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"/>
    <link rel="stylesheet" href="css/bootstrap.min.css"/>
    <style>
        body {
            margin-top: 20px;
            /*color: #fff;*/
        }

        .container {
            outline: 1px solid red;
        }

        .row div.row {
            background: red;
            color: #FFFFFF;
        }
    </style>
</head>
	<body>
		<div class="container">
			<div class="row">
				<div class="col-md-8">
					Level 1:col-md-8
					<div class="row">
						<div class="col-md-6">Level 2:col-md-6</div>
						<div class="col-md-6">Level 2:col-md-6</div>
					</div>
				</div>
				<div class="col-md-4">Level 1:col-md-4</div>
			</div>
		</div>
	</body>
</html>
